It is a 1954-235 engine. It is very small pre-drilled hole that exists beneath all 3 intake ports. It is not threaded. A 1/8" drill bit shaft fits into the holes. It originally appeared to be a leak at the head gasket until I took off the manifold enroute to removing the head. At this point, coolant flowed out of the hole. It is a Clifford manifold with a 6:8 stamped on it.
Head casting #3835913-Engine Block # F54Z
I ask about the water heated manifold only because I am aware it has been used in the past but it does not exist on this engine. As soon as I can figure out how to post a picture I will.


"If you're not living on the edge, you're taking up too much space. Life is short, eat desert first."